[[!meta date="2019-01-20 23:21:59"]]
[[!meta author="Tyler Cipriani"]]
[[!meta copyright="""
Copyright &copy; 2019 Tyler Cipriani
"""]]
[[!meta title="Lunar Eclipse Composite"]]
[[!tag
photos
photos/70-200mm-f-2.8
photos/nikon-d610
]]

![[Small](https://photos.tylercipriani.com/thumbs/2d/429eaba994b0be5df251119de7bed6/small.jpg) |
[Large](https://photos.tylercipriani.com/thumbs/2d/429eaba994b0be5df251119de7bed6/large.jpg) |
[Medium](https://photos.tylercipriani.com/thumbs/2d/429eaba994b0be5df251119de7bed6/medium.jpg) |
[Xlarge](https://photos.tylercipriani.com/thumbs/2d/429eaba994b0be5df251119de7bed6/xlarge.jpg) |
[Original](https://photos.tylercipriani.com/thumbs/2d/429eaba994b0be5df251119de7bed6/original.jpg)](https://photos.tylercipriani.com/thumbs/2d/429eaba994b0be5df251119de7bed6/large.jpg)


This is a composite image combining some of the 689 pictures I took of the full
lunar eclipse on the night of Sunday, 20 Jan 2019 from the middle of my
backyard in Longmont, Colorado. The time span covered in this image spans from
roughly 21:00–23:45.

## Gear

* Nikon D610
* Nikon 70-200mm f/2.8G ED VR II
* Nikon Auto Focus-S FX TC-20E III 2x Teleconverter
* iOptron SkyGuider Pro
* Cheap Pangshi intervalometer

## Acquisition

I took 50 shots (or so) every 15 minutes for the duration of the eclipse.

## Software

I do all image processing with FOSS software (with the unfortunate exception of
camera and tracker firmware).

* Debian Buster
* Darktable
    * Chromatic aberration
    * Lens correction
    * Cropping
    * Export to 16-bit TIF
* Siril
    * Create new FITs sequence from exported TIF
    * Planetary Full-Disk registration
    * Average stacking with rejection -- Windsorized Sigma Clipping
    * Wavelets sharpening
    * Save final stacked as 16-bit TIF
* GIMP 2.10.8
    * Combining images into one composite
    * Export as 8-bit JPEG
* Bash
    * So much bash.

EXIF |
--- | ---
ExposureTime | 1
FNumber | 5.6
FocalLength | 400.0 mm
CreateDate | 2019-01-20 22:21:59
Lens | 70-200mm f/2.8
ISO | 1600
Model | NIKON D610
Make | NIKON CORPORATION

